제어로봇시스템학회:학술대회논문집

Institute of Control, Robotics and Systems (제어로봇시스템학회)
권호 표지

Harmonics Reduction in Load control and Management system

  • Thueksathit, W. (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Tipsuwanporn, V. (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Hemawanit, P. (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Gulpanich, S. (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang) ;
  • Srisuwan, K. (Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang)
  • Published : 2003.10.22
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents conservation of electrical energy in building with harmonics analysis and compensation which occur in electrical system. We use load controlling and management system in order to adjust load factor of system.The maximum demand limiting and controlling are used ,then the system can acquire the prediction and compare it to the maximum demand set point.The electrical signal analysis based on FFT technique. The harmonics are compensated by using harmonic filters.This system consists computer which works as controller, processor , analysis and database unit together with digital power meter in form of multidrop network through serial communication via RS-485.The load control system uses PLC to control load via serial communication RS-485. The A/D converter is used for sampling the electrical signals via parallel port of computer.The harmonic filters are controlled by a computer.The data of measurement such as voltage, current, power, power factor, total harmonic distortion, energy, etc., can be saved as database and analysis. The load factor is adjusted by limiting and controlling maximum demand. The load factor adjustment can reduce the cost of electric consumption and energy generation together with harmonics compensation in order to increase high efficiency of electrical system.

Keywords